Method of applying shingles

ABSTRACT

The method includes applying a vertically overlapped course of undercover shingles to the valley formed between two adjoining roof sections and then applying conventional courses of top shingles which are of shorter vertical extent than the undercover shingles to the adjacent roof sections and progressively partially covering the undercover shingles with courses of top or cover shingles whereby an improved shingle covering unit is provided for the valley formed between the roof sections.

O United States Patent 1151 3,638,388 Crookston Feb. 1, 1972 [54] METHODOF APPLYING SHINGLES FOREIGN PATENTS OR APPLICATIONS [72] Inventor:Anthony J. Crookston, 302 Beaver St., 324,758 2/1930 Great Britain ..52/I3 Akron, Ohio 44306 51,599 11/1910 Switzerland ..52/13 [221 1970Primary Examiner-Frank L. Abbott 21 APPL 4,933 Assistant Examiner-Sam D.Burke Attorney-Oldham & Oldham [52] US. Cl ..52/748, 52/5 I8 57 ABSTRACT[51] lnt.Cl ..E04g 21/14 [58] Field of Search ..52/748, 747, 5 I8, 13The meflwd mclqdes PP Y a vemcally over"Weti mum of undercover shinglesto the valley formed between two ad- [56] References Cited joining roofsections and then applying conventional courses of top shingles whichare of shorter vertical extent than the un- UNITED STATES PATENTSdercover shingles to the adjacent roof sections and progressivelypartially covering the undercover shingles with courses 1,753,583 4/1930Speer ..52/747 X of top or cover Shingles whereby an improved Shinglecovering lg gi t 2 2 unit is provided for the valley formed between theroof secac ti 2,226,239 12/1940 Elmendorf ..52/518 X 2,353,259 7/1944Owen et al ..52/13 5 Claims, 5 Drawing Figures PATENTED m 1 19723.638388 IN VENTOR.

30 ANTHONYJICROOKSTON BY I ATTORNEYS,

METHOD OF APPLYING SHINGLES The present invention relates to a-novel andimproved shin-.

gle and a method of applying shingles to the valley forme betweenadjoining roof sections.

Heretofore there have been various types of roof coverings proposed foruse in endeavoring to provide a permanent watertight cover over abuilding roof at the valley formed between adjacent roof sections. Insome instances, a metal cover strip is applied at the valley between theroof sections and this may be under or over the shingle coating providedon the roof. In addition, it has been conventional practice to attemptto interleave end portions of the terminal shingles provided on theadjacent roof sections and to have such interleaved shingles overlap inthe roof valley for providing a watertight cover thereover. However,insofar as I am aware, none of such valley covering techniques aspracticed before and shingle means provided for covering valleys havebeen able to provide satisfactory, permanent, easily installed coveringsfor the valleys formed between adjacent roof sections.

The general object of the present invention is to provide a novel andimproved method of applying shingles to a roof valley and characterizedby the provision of a vertically overlapped course of undercovershingles applied solely to the valley portion of the roof and adjacentedge portions of the roof sections.

Another object of the invention is to provide undercover shingles whichmay be thinner than conventional top shingles and which are of greatervertical height than conventional shingles whereby when courses ofundercover shingles and top shingles are applied to a valley, theoverlapped joints between the individual shingles of the undercoverlayer and the cover layer are vertically offset from each other wherebyan improved, watertight covering action is obtained.

Another object of the invention is to provide a novel and improvedundercover shingle for use in covering roof valleys and the like andwherein the shingle is of greater vertical height than conventional topshingles.

A further object of the invention is to provide an easily practicedmethod for building up, progressively, an effective watertight coveringover roof valleys.

The foregoing and other objects and advantages of the invention will bemade more apparent as the specification proceeds.

Attention now is particularly directed to the accompanying drawings,wherein:

FIG. I is a plan view of a roof forming a roof valley and indicating theinitial application of shingles to the roof valley;

FIG. 2 is the next progressive step showing how shingles can be appliedin accordance with the method of the invention;

FIG. 3 is a plan view of a conventional roof shingle;

HO. 4 is a plan view of an undercover roof shingle of the invention; and

FIG. 5 is a reduced scale plan of another undercover shingle.

When referring to corresponding members shown in the drawing andreferred to in the specification, corresponding numerals are used tofacilitate comparison therebetween.

lNVENTlVE SUBJECT MATTER The present invention relates in general to amethod or progressively attaching roof shingles to a valley formedbetween adjoining roof sections and wherein the method comprises usingundercover shingles of greater height than conventional top shingles andprogressively securing such shingles to a roof valley in verticallyoverlapping relationship, and then progressively applying courses ofconventional top shingles to adjacent roof sections forming a roofvalley and associating adjacent end shingles of such courses to providea top cover shingle over the roof valley.

With reference to the accompanying drawings and the details showntherein, a building Z is shown which has a valley indicated by thecenterline AB formed in the roofof the building between adjacent roofportions indicated by the area ABC,

and ABD, respectively. These roof sections normally are flat and drainto the centerline AB of the roof valley.

In order to provide an easily applied, practical, watertight cover tothe valley section AB formed between the adjoining roof sections, themethod of the invention is used with a plurality of undercover shingles10. These shingles l0 are of greater vertical height than conventionalshingles and the shingles preferably are of roughly triangular shape andhave a straight base edge ll and converging upper edges 12 and 13. Theseshingles may be made from thinner material than the regular top shinglesand thus may be made, for example, from 50 lb. rolled roof paper, orequivalent material, or they may be made from any suitable shinglematerial.

In applying the roof shingles 10 to the valley AB, initially thestraight lower edge 11 of the shingle I0 is applied along the lower edgeof the one roof section ABC so as to extend over the roof valley andhave a portion including a side edge 14 of the shingle extend up andcover part of the adjacent roof section ABD. After applying to the roofvalley and pressing against the adjacent surface, the shingle is securedin place by conventional roofing nails 15, or equivalent members.

After the first shingle [0 has been positioned, then other similarshingles 10a, 10b, etc., can be applied to extend up in verticallyoverlapped relationship to each other along the valley AB in the roof.Then conventional shingles 16, 16a, etc., can be applied as a coursestaring along the lower margin of the roof section ABC. It is indicatedthat the shingle 16a normally will extend across the valley line ABformed in the roof and be secured thereover. Next si'milar course ofshingles can be applied to the roof section ABC and they are indicatedby shingle 17, 17a, etc. Usually the layer or course of the top or coverof conventional shingles formed from the shingles 17. 17a, etc., willterminate short of the valley line AB but. if desired, these shinglescan also overlap the course formed from the shingles 16, 16a, etc. Thenif other under shingles 10a, 10b, etc., have not been applied over thevalley. and in order to complete the roof, the next verticallyassociated under cover shingle 10:: would be applied over the roofvalley and be secured to both roof sections. Next additional course ofshingles 18, 18a, etc., can be applied to the roof section ABC and asimilar course or next row of shingles will be applied to the other roofsection ABD. Such steps would then be repeated to cover the roof androof valley.

It will be noted that the undercover shingles 10, 100, etc., are appliedto cover the valley AB with the apex of the roughly triangularly shapedshingle being offset from the roof valley, and usually on the same sidethereof. However, the portions of the shingles 10 at the valley are ofgreater height than the rectangular shingles l6, 18, etc., and the topedge l3 of each of the shingles used in covering the valley has adifferent angle to the horizontal, or formed with the valley, than thesimilar angle formed by top edge 20 of a conventional shingle [6 as itextends across the valley AB. Hence, these different relationships ofthe shingles 10, 10a, etc., to the associated shingles 16a, 17a, 18a,etc., provide effective ways to prevent any possible leakage of waterthrough the shingles used to cover the valley AB in the roof.

The drawings show a conventional shingle [6 in FIG. 3 and an undercovershingle 10 in FIG. 4 and these are shown to similar scales and are ofcorresponding sizes to those actually preferred in use. Thus it is notedthat the vertical height of the undercover shingle 10 is appreciablygreater than the vertical height of the conventional shingle. Suchundercover shingles 10 can always be applied to the roof valley so thatthe top edge 13 of these shingles will always be vertically offset fromthe top edge of the cover shingles at the actual roof valley line.

it should be noted that the undercover shingles 10 need not be of theshape shown, thus the end portions of the shingle 10 may be cut off onthe lines as indicated at X and Y in FIG. 4, while it also is possibleto form a shingle of other shape such as the roughly trapezoidal shapeshingle 30 shown in FIG. 5. In this instance, the shingle is made higherat the end or side edge 3| than at its end 32 so that as the shingle 30is applied to the roof section ABC to extend over the valley and ontothe adjacent roof section, usually such edge 31 will be applied to theadjoining section ABD. The height of even the shorter side 32 is greaterthan the height of a conventional shingle whereby the shingles againwill not provide any vertically overlapped joints with the same top edgeline angle or positioning as in the overlapping of the conventionalcover shingles applied over the roof valley. But by use of a roughlyequal top edge shaped shingle, as the shingle 10, a greater verticaloverlap and a good angle of divergence is provided between the top edges13 and 20 with minimum material in the shingle l0.

The shingles 16a and 17a normally would be interlocked with each otherat the roof valley for extra layers of protection and corner portions ofthe shingles usually would not be removed even though it is so indicatedin FIGS. 1 and 2.

Hence, from the foregoing, it is believed that a novel and improvedshingle has been provided for use in covering roof valleys and that animproved method of covering valleys with the watertight shingle layershas been provided. Thus, the objects of the invention have beenachieved.

What is claimed is:

I. A method of attaching shingles to a roof to cover a valley and usingundercover shingles of a greater height than conventional rectangulartop shingles, which method comprises the steps of applying an undercovershingle to both sides of a roof valley to extend across the same at thelower edge of the roof and securing the same in position,

laying a second undercover shingle over said valley and said firstundercover shingle and vertically offset from said first shingle tooverlap the same partially and securing such second shingle in position,

continuing the buildup of a layer of undercover shingles in verticallyoverlapped relation over said valley,

applying a course of rectangular shingles to the lower edge of a firstside of the roof to extend at least to the valley and partly cover thelowermost undercover shingle, said rectangular shingles being of lessheight than said undercover shingles,

laying a course of rectangular shingles on the opposite side of saidvalley at the lower edge of the roof to extend at least to said valley,at least one of said courses of shingles extending across said valley,and

progressively laying further courses of rectangular shingles on bothsides of said valley and only partly covering parts of one undercovershingle with each of such courses, the overlapped portions of saidundercover shingles being offset along said roof valley in relation tothe overlapped portions of said rectangular shingles.

2. A method of attaching shingles as in claim I including the steps ofproviding undercover shingles of roughly triangular shape and having avertical height greater than a conventional rectangular shingle, and

securing said undercover shingle to the valley with the apex of theshingle offset from such valley, and positioning the top edge of suchshingle at a different angle to the valley than the angle of the topedge of the conventional rectangular shingles forms with the valley.

3. A method of attaching shingles to a roof to cover a valley comprisingthe steps of providing undercover shingles of a greater height thanconventional rectangular shingles,

applying an undercover shingle to a first side of a roof valley toextend across the valley at the lower edge of the roof and securing itin position,

applying a conventional rectangular shingle to the lower edge of saidfirst side of the roof to extend across the valley and partly cover theundercover shingle,

laying a course of shingles on the opposite side of said valley at thelower edge of the roof and extending at least to said valle laying gsecond undercover shingle on said first side of said valley over thefirst undercover shingle to contact and partly cover and verticallyoverlap said first undercover shingle,

laying a next course of shingles on said first side of said valley andextending an end shingle over said valley and securing the same inposition, and

continuing the progressive buildup of vertically advancing courses ofsaid undercover and conventional shingles to cover the roof and provideat least a double layer of overlapped, undercover and top shingles atthe valley, the overlaps of said undercover shingles on themselves andof said rectangular shingles on themselves being offset along the axisof said valley.

4. A method of attaching shingles as in claim 3 where the undercovershingles are of roughly triangular shape and have a vertical heightgreater than a conventional rectangular shingle, and

including the steps of securing said undercover shingle to the valleywith the apex of the shingle offset from such valley, and positioningthe top edge of such shingle at a different angle to the valley than theangle of the top edge of the conventional rectangular shingles formswith the valley, said top edges being vertically offset from each other.

5. A method as in claim 3 wherein an undercover shingle is applied toand extends across said valley before the courses of regular rectangularshingles are applied to said valley.

1. A method of attaching shingles to a roof to cover a valley and usingundercover shingles of a greater height than conventional rectangulartop shingles, which method comprises the steps of applying an undercovershingle to both sides of a roof valley to extend across the same at thelower edge of the roof and securing the same in position, laying asecond undercover shingle over said valley and said first undercovershingle and vertically offset from said first shingle to overlap thesame partially and securing such second shingle in position, continuingthe buildup of a layer of undercover shingles in vertically overlappedrelation over said valley, applying a course of rectangular shingles tothe lower edge of a first side of the roof to extend at least to thevalley and partly cover the lowermost undercover shingle, saidrectangular shingles being of less height than said undercover shingles,laying a course of rectangular shingles on the opposite side of saidvalley at the lower edge of the roof to extend at least to said valley,at least one of said courses of shingles extending across said valley,and progressively laying further courses of rectangular shingles on bothsides of said valLey and only partly covering parts of one undercovershingle with each of such courses, the overlapped portions of saidundercover shingles being offset along said roof valley in relation tothe overlapped portions of said rectangular shingles.
 2. A method ofattaching shingles as in claim 1 including the steps of providingundercover shingles of roughly triangular shape and having a verticalheight greater than a conventional rectangular shingle, and securingsaid undercover shingle to the valley with the apex of the shingleoffset from such valley, and positioning the top edge of such shingle ata different angle to the valley than the angle of the top edge of theconventional rectangular shingles forms with the valley.
 3. A method ofattaching shingles to a roof to cover a valley comprising the steps ofproviding undercover shingles of a greater height than conventionalrectangular shingles, applying an undercover shingle to a first side ofa roof valley to extend across the valley at the lower edge of the roofand securing it in position, applying a conventional rectangular shingleto the lower edge of said first side of the roof to extend across thevalley and partly cover the undercover shingle, laying a course ofshingles on the opposite side of said valley at the lower edge of theroof and extending at least to said valley, laying a second undercovershingle on said first side of said valley over the first undercovershingle to contact and partly cover and vertically overlap said firstundercover shingle, laying a next course of shingles on said first sideof said valley and extending an end shingle over said valley andsecuring the same in position, and continuing the progressive buildup ofvertically advancing courses of said undercover and conventionalshingles to cover the roof and provide at least a double layer ofoverlapped, undercover and top shingles at the valley, the overlaps ofsaid undercover shingles on themselves and of said rectangular shingleson themselves being offset along the axis of said valley.
 4. A method ofattaching shingles as in claim 3 where the undercover shingles are ofroughly triangular shape and have a vertical height greater than aconventional rectangular shingle, and including the steps of securingsaid undercover shingle to the valley with the apex of the shingleoffset from such valley, and positioning the top edge of such shingle ata different angle to the valley than the angle of the top edge of theconventional rectangular shingles forms with the valley, said top edgesbeing vertically offset from each other.
 5. A method as in claim 3wherein an undercover shingle is applied to and extends across saidvalley before the courses of regular rectangular shingles are applied tosaid valley.